Today I posted something to the effect on Twitter. I've decided to start adding things I would consider The Devil, in Mama Boucher's terms, here.

Cary Millsap is The Devil. Why? A year or 2 ago he posted a link on Twitter about why we don't need to double-space anymore after a period. Each and every time I go to double-tap the space bar, I think of that post and curse Cary appropriately.

Triggers are probably The Devil. Rarely have I seen them implemented in a halfway decent manner. Usually, they're used as some work-around because someone was too lazy to update their PL/SQL...or just couldn't figure out a way to accomplish their goal without them (say, like removing direct INSERT/UPDATE/DELETE privileges on the source table...?).

From that last post, tnsnames.ora can be The Devil.

I would say that commas in front of the line are The Devil.

My friend Jason Baer is The Devil. Go to 2:40 in:

That's all I have for now.

What do you consider The Devil?

UpdateMe. I can think of at least 47 people who believe I am The Devil. Man...how could I forget something like that.